AC Repair — Bay Area

When your AC stops working in a Bay Area summer, you need a licensed technician fast — not a call center. AD Mechanical dispatches C-20 licensed HVAC technicians same-day when available, and we diagnose the root cause before recommending any repair.

C-20 Licensed HVAC Contractor — CSLB #1155755
Upfront pricing — written quote before any work begins
Same-day service available for urgent calls
Honest repair vs. replace options, no pressure
Serving the Peninsula & Bay Area
AC repair — condenser unit with open panel showing wiring, multimeter, manifold gauges, and repair tools

Common Reasons Customers Call Us

What Our AC Repair Includes

Every call starts with a full diagnostic — not a guess. We check refrigerant levels, electrical components, capacitors, contactors, blower motors, condenser fan motors, coils, drain lines, and thermostat operation. You get a clear explanation of what we found and what it costs before we touch anything.

Repair vs. Replacement — Honest Advice

If your system is over 12–15 years old, uses R-22 refrigerant (now phased out), or the repair cost exceeds roughly half the cost of a new unit, replacement is often the smarter financial decision. We give you both options with real numbers — no pressure, no upselling.

Signs replacement may make more sense: compressor failure on an older unit, multiple failures in one season, R-22 systems with refrigerant leaks, or efficiency below 10 SEER on a system running constantly.

Service Area

San Jose, Santa Clara, Sunnyvale, Mountain View, Palo Alto, Redwood City, San Mateo, Burlingame, Millbrae, San Bruno, South San Francisco, Daly City, San Francisco, and nearby Bay Area cities

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AC Repair AC Maintenance Furnace Repair Furnace Maintenance Heat Pump Installation Heat Pump Repair Heat Pump Maintenance HVAC Diagnostic Refrigerant Leak Detection Commercial HVAC Ductwork Installation System Replacement Indoor Air Quality HVAC Contractor Bay Area
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(510) 240-9011